Java tutorial
/* * Copyright (C) 2007 Unicon, Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this distribution. It is also available here: * http://www.fsf.org/licensing/licenses/gpl.html * * As a special exception to the terms and conditions of version * 2 of the GPL, you may redistribute this Program in connection * with Free/Libre and Open Source Software ("FLOSS") applications * as described in the GPL FLOSS exception. You should have received * a copy of the text describing the FLOSS exception along with this * distribution. */ package net.unicon.academus.apps.permissions.engine; import java.util.LinkedList; import java.util.List; import net.unicon.academus.apps.permissions.PermissionsApplicationContext; import net.unicon.academus.apps.permissions.PermissionsUserContext; import net.unicon.alchemist.access.AccessBroker; import net.unicon.alchemist.access.AccessRule; import net.unicon.alchemist.access.IAccessEntry; import net.unicon.alchemist.access.Identity; import net.unicon.alchemist.access.IdentityType; import net.unicon.alchemist.access.permissions.Dummy; import net.unicon.civis.ICivisEntity; import net.unicon.civis.IGroup; import net.unicon.civis.IPerson; import net.unicon.penelope.IDecisionCollection; import net.unicon.warlock.fac.SimpleActionResponse; import net.unicon.warlock.Handle; import net.unicon.warlock.IAction; import net.unicon.warlock.IActionResponse; import net.unicon.warlock.IScreen; import net.unicon.warlock.IUserContext; import net.unicon.warlock.IWarlockFactory; import net.unicon.warlock.StateMachine; import net.unicon.warlock.WarlockException; import net.unicon.warlock.XmlFormatException; import org.dom4j.Attribute; import org.dom4j.Element; public final class SaveChangesAction extends PermissionsAbstractAction { // Instance Members. private PermissionsApplicationContext app; private IScreen screen; /* * Public API. */ public static IAction parse(Element e, IWarlockFactory owner) throws WarlockException { // Assertions. if (e == null) { String msg = "Argument 'e [Element]' cannot be null."; throw new IllegalArgumentException(msg); } if (!e.getName().equals("action")) { String msg = "Argument 'e [Element]' must be an <action> element."; throw new IllegalArgumentException(msg); } if (owner == null) { String msg = "Argument 'owner' cannot be null."; throw new IllegalArgumentException(msg); } // Handle. Attribute h = e.attribute("handle"); if (h == null) { String msg = "Element <action> is missing required attribute " + "'handle'."; throw new XmlFormatException(msg); } Handle handle = Handle.create(h.getValue()); // Choices. String[] choices = new String[0]; Attribute p = e.attribute("inpt"); if (p != null) { choices = p.getValue().split(","); } return new SaveChangesAction(owner, handle, choices); } public void init(StateMachine m) { // Assertions. if (m == null) { String msg = "Argument 'm [StateMachine]' cannot be null."; throw new IllegalArgumentException(msg); } app = (PermissionsApplicationContext) m.getContext(); screen = m.getScreen(Handle.create("permissions_welcome")); } public IActionResponse invoke(IDecisionCollection[] decisions, IUserContext ctx) throws WarlockException { // Assertions. if (decisions == null) { String msg = "Argument 'decisions' cannot be null."; throw new IllegalArgumentException(msg); } if (ctx == null) { String msg = "Argument 'ctx' cannot be null."; throw new IllegalArgumentException(msg); } if (decisions.length < 1) { String msg = "Argument 'decisions' cannot be empty."; throw new IllegalArgumentException(msg); } PermissionsUserContext puc = (PermissionsUserContext) ctx; // update the current entity selection permissions updatePermissions(decisions[0], puc); // get all the sharees from the database AccessBroker broker = puc.getPortletAccessSelection().getAccessBroker(); IAccessEntry[] entries = broker.getEntries(); Object dummyTarget = new Dummy(); List entities = new LinkedList(); //list of identity ids that exist in the current selections // update the remaining entity permissions ICivisEntity[] cEntities = puc.getCivisEntities(); AccessRule[][] accessRules = new AccessRule[cEntities.length][]; Identity[] principals = new Identity[cEntities.length]; for (int i = 0; i < cEntities.length; i++) { accessRules[i] = puc.getCivisEntryAccessRules(cEntities[i].getUrl()); if (cEntities[i] instanceof IPerson) { principals[i] = new Identity(cEntities[i].getName(), IdentityType.USER); } else { principals[i] = new Identity(((IGroup) cEntities[i]).getPathAndId(), IdentityType.GROUP); } entities.add(principals[i].getId()); } // check if the current entity selection contains the entries from the broker // if current selection does not contain broker entry, remove from broker // these were entries that were removed using the remove button for (int i = 0; i < entries.length; i++) { if (!entities.contains(entries[i].getIdentity().getId())) { broker.removeAccess(entries[i]); } } // update access rules for the entities in current selection for (int i = 0; i < principals.length; i++) { if (accessRules[i].length > 0) { broker.setAccess(principals[i], accessRules[i], dummyTarget); } else { // call remove access IAccessEntry entry = broker.getEntry(principals[i], dummyTarget); // remove access if the entry exists if (entry != null) { broker.removeAccess(entry); } } } return new SimpleActionResponse(screen, new InitialQuery(puc)); } /* * Package API. */ private SaveChangesAction(IWarlockFactory owner, Handle handle, String[] choices) { super(owner, handle, choices); // Instance Members. this.screen = null; this.app = null; } }